We already know a lot about the Surface tablet line's birthing process. However, Microsoft has only really been comfortable with showing the finished product -- until today. The company's Panos Panay just gave The Verge a peek at some of the earliest prototypes and design decisions, some of which break from the officially rehearsed story. Microsoft had considered multiple PC form factors before settling on Surface, Panay says, and the tablets didn't always have that sharp-angled design: the firm tried